log4j日志记录到postgresql不工作

Question

这是数据库架构

create table log4j_messages 
( 
  message  varchar(2000), 
  class    varchar(255), 
  priority varchar(64), 
  log_date timestamp 
);

log4j.appender.jdbc=org.apache.log4j.jdbc.JDBCAppender 
log4j.appender.jdbc.driver=org.postgresql.Driver
log4j.appender.jdbc.URL=jdbc:postgresql://MYSERVER:5432/logs 
log4j.appender.jdbc.user=logs
log4j.appender.jdbc.password=MYPASS
log4j.appender.jdbc.sql=INSERT INTO log4j_messages (message, class, priority, log_date) values ('%m', '%c', '%p', to_timestamp('%d', 'YYYY-MM-DD HH24:MI:SS,MS'))

下面是我的log4j属性文件在写入文件时的工作版本

log4j.rootCategory=DEBUG, R, O

# Stdout
log4j.appender.O=org.apache.log4j.ConsoleAppender

# File
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=log4j.log

# Control the maximum log file size
log4j.appender.R.MaxFileSize=500KB

# Archive log files (one backup file here)
log4j.appender.R.MaxBackupIndex=1

log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.O.layout=org.apache.log4j.PatternLayout

log4j.appender.R.layout.ConversionPattern=[%d{ISO8601}]%5p%6.6r[%t]%x - %C.%M(%F:%L) - %m%n
log4j.appender.O.layout.ConversionPattern=[%d{ISO8601}]%5p%6.6r[%t]%x - %C.%M(%F:%L) - %m%n

Answer 1

您应该将rootCategory设置为：

log4j.rootCategory=DEBUG, jbdc

log4j.appender.jdbc=org.apache.log4j.jdbc.JDBCAppender 
log4j.appender.jdbc.driver=org.postgresql.Driver
log4j.appender.jdbc.URL=jdbc:postgresql://MYSERVER:5432/logs 
log4j.appender.jdbc.user=logs
log4j.appender.jdbc.password=MYPASS
log4j.appender.jdbc.sql=INSERT INTO log4j_messages (message, class, priority, log_date) values ('%m', '%c', '%p', to_timestamp('%d', 'YYYY-MM-DD HH24:MI:SS,MS'))

否则记录器将没有附加器。